Posted by **Lily** on Sunday, May 26, 2013 at 5:06pm.

A rancher wants to build a rectangular pen with an area of 150 m2. Let W be the width of the pen and L be the length of the pen.

a. Find an equation for the perimeter P in terms of W and L .

b. Use the given area to write an equation that relates W and L .

c. Find the pen dimensions that require the minimum amount of fencing.

Width =

Length =

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